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Combined gasification and power generation

A combined gasification and gasifier technology, which is applied in fixed bed gasification, combined combustion mitigation, and combustible gas production, can solve the problems of not allowing the maximum capacity of the turbine, reducing air, etc., and achieve the reduction of size and power consumption, power consumption, etc. Reduced effect

Active Publication Date: 2015-07-15
PRAXAIR TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At higher design ambient temperatures or altitudes, air capture reduces the air available to the gas turbine expander and does not allow the turbine to achieve its maximum capacity

Method used

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  • Combined gasification and power generation
  • Combined gasification and power generation
  • Combined gasification and power generation

Examples

Experimental program
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Effect test

Embodiment Construction

[0020] refer to figure 1 , shows a facility 1 designed to gasify coal 10 and generate electricity. Such a facility is an IGCC plant.

[0021] Coal is typically conveyed to the planned site by rail or barge and then unloaded into a receiving hopper by equipment such as rack bottom skippers, barrel barge unloaders, etc. Coal from the hopper is fed directly into a vibratory feeder and discharged onto a belt conveyor. The conveyor transfers the coal to the coal stacker, which transfers the coal to a long-term storage stockpile or recovery area. The reclaimer loads the coal into a vibratory feeder located in the reclaim hopper below the pile. The feeder transfers the coal onto a belt conveyor which transfers the coal to a coal surge bin located in the roller compaction tower. If Facility 1 is located near a coal mine, the coal receiving and handling subsystem will be simpler. For example, no long-term storage is required. Coal can be sent directly to a coal buffer silo locate...

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Abstract

A combined gasification and electric power generation method wherein between 30.0 and 60.0 percent of the compressed air required by an air separation unit supplying oxygen to a gasifier and nitrogen to gas turbine(s) is extracted from a compressor of the gas turbine(s). An installation, including the gas turbine(s), the air separation unit, a gasifier and a gas conditioning system for producing gas turbine fuel, has a design point of ambient temperature and pressure and net power output for producing the electric power required by a captive user. The gas turbine(s), at the design point, have a capacity to compress air from the compressor thereof, at a rate between 4.8 and 6.0 times the total molar flow rate of air required by the air separation unit and the compressor of the gas turbine(s) is operated at no less than 90.0 percent of its capacity at the design point.

Description

technical field [0001] The present invention relates to a combined gasification and power generation process in which carbonaceous materials are gasified in a gasifier supplied with oxygen from a cryogenic air separation plant to produce synthesis gas which is processed for use in one or more The fuel for the gas turbine, which is supplied with nitrogen from the air separation plant and which in turn is used to generate at least part of the electricity required by the plant and to supply compressed air to the cryogenic air separation plant. Background technique [0002] In an integrated gasification and combined cycle (IGCC) known in the art, coal can be gasified and electricity can be generated. In IGCC, the gasification of coal or other carbonaceous materials produces a synthesis gas consisting mainly of hydrogen, carbon monoxide and carbon dioxide with some amount of methane-containing impurities as well as sulfur and chloride-containing impurities. In a typical gasifier...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C6/00C10J3/02C10J3/72
CPCF02C3/28F02C6/18Y02E20/18F01K23/067
Inventor R.F.德尔内维奇S.查克拉瓦蒂
Owner PRAXAIR TECH INC